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Energy Performance and Radial Force of a Mixed-Flow Pump with Symmetrical and Unsymmetrical Tip Clearances

Author

Listed:
  • Yue Hao

    (State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China)

  • Lei Tan

    (State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China)

  • Yabin Liu

    (State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China)

  • Yun Xu

    (State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China)

  • Jinsong Zhang

    (State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China)

  • Baoshan Zhu

    (State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China)

Abstract

The energy performance and radial force of a mixed flow pump with symmetrical and unsymmetrical tip clearance are investigated in this paper. As the tip clearance increases, the pump head and efficiency both decrease. The center of the radial force on the principal axis is located at the coordinate origin when the tip clearance is symmetrical, and moves to the third quadrant when the tip clearance is unsymmetrical. Analysis results show that the total radial force on the principal axis is closely related to the fluctuation of mass flow rate in each single flow channel. Unsteady simulations show that the dominant frequencies of radial force on the hub and blade correspond to the blade number, vane number, or double blade number because of the rotor stator interaction. The radial force on the blade pressure side decreases with the tip clearance increase because of leakage flow. The unsymmetrical tip clearances in an impeller induce uneven leakage flow rate and then result in unsymmetrical work ability of each blade and flow pattern in each channel. Thus, the energy performance decreases and the total radial force increases for a mixed flow pump with unsymmetrical tip clearance.

Suggested Citation

  • Yue Hao & Lei Tan & Yabin Liu & Yun Xu & Jinsong Zhang & Baoshan Zhu, 2017. "Energy Performance and Radial Force of a Mixed-Flow Pump with Symmetrical and Unsymmetrical Tip Clearances," Energies, MDPI, vol. 10(1), pages 1-13, January.
    • Handle: RePEc:gam:jeners:v:10:y:2017:i:1:p:57-:d:86980
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    Citations

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    Cited by:

    1. Han, Yadong & Tan, Lei, 2020. "Influence of rotating speed on tip leakage vortex in a mixed flow pump as turbine at pump mode," Renewable Energy, Elsevier, vol. 162(C), pages 144-150.
    2. Yabin Liu & Lei Tan & Yue Hao & Yun Xu, 2017. "Energy Performance and Flow Patterns of a Mixed-Flow Pump with Different Tip Clearance Sizes," Energies, MDPI, vol. 10(2), pages 1-15, February.
    3. Kan, Kan & Zhang, Qingying & Xu, Zhe & Zheng, Yuan & Gao, Qiang & Shen, Lian, 2022. "Energy loss mechanism due to tip leakage flow of axial flow pump as turbine under various operating conditions," Energy, Elsevier, vol. 255(C).
    4. Hao, Yue & Tan, Lei, 2018. "Symmetrical and unsymmetrical tip clearances on cavitation performance and radial force of a mixed flow pump as turbine at pump mode," Renewable Energy, Elsevier, vol. 127(C), pages 368-376.
    5. Alemi Arani, Hamed & Fathi, Mohammad & Raisee, Mehrdad & Nourbakhsh, Seyed Ahmad, 2019. "The effect of tongue geometry on pump performance in reverse mode: An experimental study," Renewable Energy, Elsevier, vol. 141(C), pages 717-727.
    6. Li, Xiao-Bin & Binama, Maxime & Su, Wen-Tao & Cai, Wei-Hua & Muhirwa, Alexis & Li, Biao & Li, Feng-Chen, 2020. "Runner blade number influencing RPT runner flow characteristics under off-design conditions," Renewable Energy, Elsevier, vol. 152(C), pages 876-891.
    7. Wenwu Zhang & Zhiyi Yu & Muhammad Noaman Zahid & Yongjiang Li, 2018. "Study of the Gas Distribution in a Multiphase Rotodynamic Pump Based on Interphase Force Analysis," Energies, MDPI, vol. 11(5), pages 1-16, April.
    8. Yu Song & Honggang Fan & Wei Zhang & Zhifeng Xie, 2019. "Flow Characteristics in Volute of a Double-Suction Centrifugal Pump with Different Impeller Arrangements," Energies, MDPI, vol. 12(4), pages 1-15, February.
    9. Liu, Yabin & Tan, Lei, 2018. "Tip clearance on pressure fluctuation intensity and vortex characteristic of a mixed flow pump as turbine at pump mode," Renewable Energy, Elsevier, vol. 129(PA), pages 606-615.
    10. Yabin Liu & Lei Tan & Ming Liu & Yue Hao & Yun Xu, 2017. "Influence of Prewhirl Angle and Axial Distance on Energy Performance and Pressure Fluctuation for a Centrifugal Pump with Inlet Guide Vanes," Energies, MDPI, vol. 10(5), pages 1-14, May.
    11. Han, Yadong & Tan, Lei, 2020. "Dynamic mode decomposition and reconstruction of tip leakage vortex in a mixed flow pump as turbine at pump mode," Renewable Energy, Elsevier, vol. 155(C), pages 725-734.
    12. Jiyun, Du & Hongxing, Yang & Zhicheng, Shen & Xiaodong, Guo, 2018. "Development of an inline vertical cross-flow turbine for hydropower harvesting in urban water supply pipes," Renewable Energy, Elsevier, vol. 127(C), pages 386-397.
    13. Ji, Leilei & Li, Wei & Shi, Weidong & Chang, Hao & Yang, Zhenyu, 2020. "Energy characteristics of mixed-flow pump under different tip clearances based on entropy production analysis," Energy, Elsevier, vol. 199(C).
    14. Jinsong Zhang & Lei Tan, 2018. "Energy Performance and Pressure Fluctuation of a Multiphase Pump with Different Gas Volume Fractions," Energies, MDPI, vol. 11(5), pages 1-14, May.
    15. Elbatran, A.H. & Ahmed, Yasser M. & Shehata, Ahmed S., 2017. "Performance study of ducted nozzle Savonius water turbine, comparison with conventional Savonius turbine," Energy, Elsevier, vol. 134(C), pages 566-584.
    16. Shi, Guangtai & Liu, Zongku & Xiao, Yexiang & Yang, Hong & Li, Helin & Liu, Xiaobing, 2020. "Effect of the inlet gas void fraction on the tip leakage vortex in a multiphase pump," Renewable Energy, Elsevier, vol. 150(C), pages 46-57.
    17. Ming Liu & Lei Tan & Shuliang Cao, 2018. "Design Method of Controllable Blade Angle and Orthogonal Optimization of Pressure Rise for a Multiphase Pump," Energies, MDPI, vol. 11(5), pages 1-20, April.
    18. Xin Chen & Shiyang Li & Dazhuan Wu & Shuai Yang & Peng Wu, 2020. "Effect of Suction and Discharge Conditions on the Unsteady Flow Phenomena of Axial-Flow Reactor Coolant Pump," Energies, MDPI, vol. 13(7), pages 1-25, April.
    19. Liu, Yabin & Tan, Lei, 2018. "Method of C groove on vortex suppression and energy performance improvement for a NACA0009 hydrofoil with tip clearance in tidal energy," Energy, Elsevier, vol. 155(C), pages 448-461.
    20. Yabin Liu & Lei Tan & Binbin Wang, 2018. "A Review of Tip Clearance in Propeller, Pump and Turbine," Energies, MDPI, vol. 11(9), pages 1-30, August.
    21. Kumar, P. Madhan & Seo, Jeonghwa & Seok, Woochan & Rhee, Shin Hyung & Samad, Abdus, 2019. "Multi-fidelity optimization of blade thickness parameters for a horizontal axis tidal stream turbine," Renewable Energy, Elsevier, vol. 135(C), pages 277-287.

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